Cathcart, W. G. (2000). Learning mathematics in elementary and middle schools. Merrill.
Citace podle Chicago (17th ed.)Cathcart, W. George. Learning Mathematics in Elementary and Middle Schools. Upper Saddle River, N.J: Merrill, 2000.
Citace podle MLA (9th ed.)Cathcart, W. George. Learning Mathematics in Elementary and Middle Schools. Merrill, 2000.
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